From what I see, Simply Grammar covers just that, grammar. There are some pictures in it and you could do a “picture study”, but Language Lessons has a variety of language arts in it, not just grammar. We switched to Sandi Queen’s Language Lessons (for the Very Young, Young Child and Elementary Child–she also has one for middle school age). They are in color, the book is bigger and the child can write in the book. She modeled them after the Serl’s Language Lessons books.
If a child needed to focus just on grammar, Simply Grammar is sweet and gentle. But if you’re wanting to cover more of the area of language arts, Language Lessons is wonderful. We just liked the convenience and color of the Queen’s!
I’m sure you’ll get more feedback!
Blessings!
Trisch